Occasions on which it is obligatory to Observe the Qada Only
818. In cases like the following cases it is obligatory on a person to observe a Qada fast only and it is not olbigatory on him to give a Kaffarah:
(i) If he forgets to do Ghusl of Janabah during the month of Ramaèàn and fasts for one or more days in the state of Janabah.
(ii) If in the month of Ramaèàn, a man without investigating as to whether Fajr has set in or not, commits an act, which invalidates a fast, and it becomes known later that it was Fajr.
(iii) If a person peaks his fast relying on the statement of another person whose statement is proof, or the person thinks that his statement is proof, and it is known later that Maghrib had not set in.
(iv) When one rinses his mouth with water because it has dried due to thirst and the water uncontrollably goes down one's throat. But if he forgets that he has kept a fast, or if he does the mouthwash not because of thirst, and water is uncontrollably swallowed, there will be no Qada’.
819. If a fasting person puts something other than water in his mouth and it goes down the throat involuntarily, or puta water in his nose and it goes down involuntarily, it will not be obligatory on him to observe Qada’ of the fast.
820. If in the month of Ramaèàn, a person does not become aware, after investigation, of being Fajr and commits an act which invalidates a fast, and it is later known that it was Fajr already, it will not be necessary for him to offer Qada’ of that fast.
821. If a person doubts whether or not Maghrib has set in, he cannot peak his fast. But if he doubts whether or not it is Fajr he can commit, even before investigation, an act which invalidates a fast.